Liz Truss's new chancellor Kwasi Kwarteng will deliver an emergency mini-Budget next Friday, The Mirror understands.
Labelled a "fiscal event" by the government, the chancellor is expected to unveil further details of the energy price cap that was announced last week by Ms Truss amid the cost of living crisis.
He is also expected to focus on tax cuts - including reversing April's increase in national insurance - after the new prime minister made taxation a centerpiece of her campaign for the Tory leadership.
There will be no official announcement on the date of the mini-Budget until after Queen Elizabeth II's state funeral on Monday, but sources confirmed it will take place on Friday 23 September.